Creator/Creator3D changes

[Michael <macallan%netbsd.org@localhost>]

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Hello,

yesterday I committed a bunch of changes to the ffb driver to  
implement hardware acceleration for character drawing etc. so we don't  
have to access the framebuffer anymore. While there I noticed that the  
driver does an awful lot of syncing which on my ffb2+ is unnecessary.  
According to the documentation font drawing operations could interfere  
with blitter operations but I found no evidence of that. Also, the  
documentation says nothing about writes to the font data register  
being pipelined or not - so far my 450MHz US-IIs failed to make it  
overflow.
That said, if you have an old pre-ffb2 Creator or Creator3D please  
check if there are any weird side effects. If you see any they should  
go away when you put
options FFB_SYNC
into your kernel config.

have fun
Michael

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